RT Journal Article
T1 Artificially induced reduction of the dissipation anisotropy in high-temperature superconductors
A1 González Herrera, Elvira María
A1 Villegas, J. E.
A1 Varela del Arco, María
A1 Santamaría Sánchez-Barriga, Jacobo
A1 Prieto, P.
A1 Schuller, Ivan K.
A1 Vicent López, José Luis
AB Bi_2Sr_2CaCu_2O_8, RBa_2Cu_3O_7 (R=Y, Eu) thin films and RBa_2Cu_3O_7/PrBa_2Cu_3O_7 superlattices have been fabricated by sputtering technique. The anisotropic dissipation was measured close to the critical temperatures with high applied magnetic fields rotating from parallel to perpendicular to the substrate. In multilayers, in a large magnetic field interval, the dissipation anisotropy is reduced as much as 60% in comparison with the most anisotropic system (Bi_2Sr_2CaCu_2O_8) and at least 50% at 30 kOe in comparison with 123 films. This strong anisotropy reduction is discussed taking into account the role played by the superlattice modulation lengths on magnetic matching effects and coupling between the superconducting layers.
PB American Institute of Physics
SN 0003-6951
YR 2002
FD 2002-05-27
LK https://hdl.handle.net/20.500.14352/60175
UL https://hdl.handle.net/20.500.14352/60175
LA eng
NO ©2002 American Institute of Physics.The authors want to thank the Spanish CICYT (MAT99-0724 and MAT2000-1468), U.S. DOE, COLCIENCIAS, New Del Amo Program, and the ESF Vortex program. One of the authors (J.E.V.) thanks the Comunidad de Madrid for a fellowship.
NO Spanish CICYT
NO ESF Vortex Program
DS Docta Complutense
RD 1 may 2024